Respuesta:
8x
Explicación paso a paso:
se usa binomio cuadrado perfecto:
(x + 2)² – (x – 2)² =
[tex] {x}^{2} + 4x + 4 - ( {x}^{2} - 4x + 4)[/tex]
[tex] {x}^{2} + 4x + 4 - {x}^{2} + 4x - 4 \: = [/tex]
[tex]8x[/tex]
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Respuesta:
8x
Explicación paso a paso:
se usa binomio cuadrado perfecto:
(x + 2)² – (x – 2)² =
[tex] {x}^{2} + 4x + 4 - ( {x}^{2} - 4x + 4)[/tex]
[tex] {x}^{2} + 4x + 4 - {x}^{2} + 4x - 4 \: = [/tex]
[tex]8x[/tex]